Floating bearing bush for a printed circuit board

Abstract

A floating bearing bush for bearing a printed circuit board includes a bearing ring and a soldering ring. The bearing ring includes a tubular opening for receiving a fastening bolt. The soldering ring surrounds the bearing ring and is configured to be soldered by a lower edge onto a printed circuit board. The lower edge of the soldering ring is provided by a continuous wall which is configured to keep a liquid potting compound away from the interior of the soldering ring. The bearing ring is movably suspended within the soldering ring, with the result that the bearing ring is movable at least in a radial direction with respect to the soldering ring.

The invention claimed is: 
     
       1. A floating bearing bush for mounting a printed circuit board, comprising:
 a bearing ring including a tubular opening configured to receive a fastening bolt; and 
 a soldering ring surrounding the bearing ring and including a continuous wall having a lower edge, the lower edge soldered to the printed circuit board, 
 wherein the continuous wall is configured to keep a liquid casting compound away from an interior of the soldering ring, and 
 wherein the bearing ring is suspended within the soldering ring, such that the bearing ring is movable at least in a radial direction relative to the soldering ring. 
 
     
     
       2. The floating bearing bush as claimed in  claim 1 , wherein:
 the bearing ring includes a periphery that projects radially outward; and 
 the bearing ring is placed on bearing elements of the soldering ring that project inward via the periphery. 
 
     
     
       3. The floating bearing bush as claimed in  claim 2 , wherein the bearing elements project radially inward or are curved around the bearing ring in a circumferential direction. 
     
     
       4. The floating bearing bush as claimed in  claim 2 , wherein the bearing ring is movable relative to the bearing elements. 
     
     
       5. The floating bearing bush as claimed in  claim 2 , wherein:
 the soldering ring includes an upper portion having elastic the bearing elements; 
 the bearing elements are elastic; and 
 the bearing ring is mounted in the soldering ring via the elastic bearing elements and/or the elastic bearing elements are defined by portions of the soldering ring that are bent inward. 
 
     
     
       6. The floating bearing bush as claimed in  claim 5 , wherein the bearing ring is jammed into the elastic bearing elements. 
     
     
       7. The floating bearing bush as claimed in  claim 1 , wherein:
 an upper portion of the soldering ring is bent in an arcuate inward manner by more than 90°; and 
 bearing elements configured for the bearing ring are attached to the upper portion in a radially inward manner. 
 
     
     
       8. The floating bearing bush as claimed in  claim 1 , wherein the soldering ring includes a guide pin that protrudes from an upper portion of the soldering ring beyond the lower edge of the soldering ring. 
     
     
       9. A control module for a vehicle, comprising:
 a printed circuit board supporting electronic components configured to control an apparatus of the vehicle; 
 a dam applied to the printed circuit board and surrounding the electronic components on the printed circuit board; 
 a casting compound cast within the dam on the printed circuit board and in which the electronic components are embedded; and 
 a floating bearing bush soldered to the printed circuit board within the dam and including:
 a bearing ring having a tubular opening configured to receive a fastening bolt; and 
 a soldering ring surrounding the bearing ring and including a lower edge soldered to the printed circuit board, 
 
 wherein the soldering ring is cast in the casting compound, and 
 wherein the bearing ring is suspended within the soldering ring, such that the bearing ring is movable at least in a radial direction relative to the soldering ring. 
 
     
     
       10. The control module as claimed in  claim 9 , further comprising:
 a fixed bearing bush soldered to the printed circuit board within the dam and defining an opening configured to receive the fastening bolt and that opens into a further bore in the printed circuit board.